#!/bin/sh

# Copyright 2015-2020 Rivoreo

# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:

# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE
# FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
# CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

if [ -z "${PROGRAM_DIR+set}" ]; then
	echo "You should not run this script directly" 1>&2
	exit 255
fi
[ -z "$SAR" ] && SAR=sar
[ -n "$PER_CPU_STATS" ] && extra_flags="-P ALL" || extra_flags=
export LC_TIME=C
$SAR $extra_flags -u "$INTERVAL" | sed -ur -e "/^[0-9]{2}:[0-9]{2}:[0-9]{2}/!d" -e "s/[0-9]{2}:[0-9]{2}:[0-9]{2}.{4}//" | while read -r line; do
	set -- $line
	if [ $# != 7 ]; then
		echo "data error: # $# != 7" 1>&2
		continue
	fi
	[ "$1" = CPU ] && continue
	cpu="$1"
	[ "$cpu" = all ] && cpu=avg
	if [ -n "$INFLUXDB_BASE_URL" ]; then
		http_post "${INFLUXDB_BASE_URL}write?db=$INFLUXDB_DB_NAME" \
			"cpustat,host=$HOSTNAME,cpu=$cpu user=$2,nice=$3,system=$4,iowait=$5,steal=$6,idle=$7" 1>&2
	fi
	if [ -n "$CARBON_SERVER" ]; then
		printf '%s\n%s\n%s\n%s\n%s\n%s\n' \
			"cpustat.$HOSTNAME_FOR_CARBON.$cpu.user $2 -1" \
			"cpustat.$HOSTNAME_FOR_CARBON.$cpu.nice $3 -1" \
			"cpustat.$HOSTNAME_FOR_CARBON.$cpu.system $4 -1" \
			"cpustat.$HOSTNAME_FOR_CARBON.$cpu.iowait $5 -1" \
			"cpustat.$HOSTNAME_FOR_CARBON.$cpu.steal $6 -1" \
			"cpustat.$HOSTNAME_FOR_CARBON.$cpu.idle $7 -1"
	fi
done | send_carbon_lines
